Swiss gold open faced minute repeating lady’s Watch Circa 1915

Gold minute repeater by Patek Philippe
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A very fine and rare Swiss very small and slim, 18K yellow gold minuterepeating keyless lady’s pendant watch. , circa 1915.  Movement with 29 jewels, wolf’s tooth winding, calibrated and counterpoised straight line lever escapement, cut bimetallic compensation balance with 8 adjustments, blued steel Breguet balance spring, index regulator, repeating the hours, quarter hours and minutes with two hammers on two gongs activated by a slide in the band. Polished case, concealed hinge, the back cover with inlaid platinum monogram DEJ.
Gilt dial with painted black Breguet numerals, outer minute track, subsidiary seconds, engine-turned center. Blued steel “spade” hands.  Dial, case and movement signed.
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Diameter: 32.5 mm
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Signed: Patek, Philippe & Co. Geneva
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Accompanied by the original Patek Philippe fitted wooden box, spare crystal, mainspring and remontoire spring and the Extract from the Archives.